Sniper EFI CAN to USB Dongle-Com. Cable

The Sniper EFI CAN to USB Dongle-Com Cable is an essential diagnostic and tuning interface for modern fuel-injected vehicles running Holley Sniper EFI control systems. This cable bridges the gap between your engine management computer and a Windows-based PC, enabling real-time data logging, parameter adjustment, and troubleshooting capabilities that serious performance builders and mechanics depend on. Whether you're dialing in a carbureted-to-EFI conversion, fine-tuning a crate engine swap, or diagnosing drivability issues, this communication dongle is the critical link between your Sniper ECU and tuning software.

The Sniper EFI CAN to USB Dongle-Com Cable converts CAN bus signals (Controller Area Network—the standard automotive data protocol) into USB communication, allowing seamless integration with Holley's tuning suite on any compatible laptop or desktop. CAN bus technology transmits engine parameters at high speed with minimal noise, ensuring reliable real-time feedback during cranking, idle tuning, and wide-open-throttle testing. The compact form factor (4.45 x 3.3 x 4.9 inches) keeps your shop or mobile tuning setup organized, while the lightweight construction (0.28 lbs) makes it portable for in-vehicle and on-the-bench work alike. This interface supports live sensor monitoring, fuel map editing, spark timing adjustments, and data export for detailed engine performance analysis.

Professionals restoring classic muscle cars, building LS-swap platforms, or upgrading carburetors to sequential fuel injection will find this dongle indispensable for extracting maximum performance from Holley Sniper systems. It is compatible exclusively with Holley Sniper EFI electronic control units and requires Windows-based PC software (Sniper EFI Tuning Software) for full functionality. Installation is straightforward—connect the CAN connector to your Sniper ECU harness and plug the USB end into any available computer port—making it suitable for both professional shops and enthusiast hobbyists tackling serious engine management work.